Base station system and data transmission method
A base station system and baseband data technology, applied in electrical components, wireless communication, etc., can solve the problems of complex interconnection structure and high cost of base stations, and achieve the effect of reducing Ethernet connections
Active Publication Date: 2009-09-23
DATANG MOBILE COMM EQUIP CO LTD
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[0006] Depend on figure 1 From the shown base station architecture, it can be seen that in existing TD-SCDMA and TDD LTE technologies, the base station’s main control unit and baseband unit, between the main control unit and the baseband pool control unit, and between the baseband unit and the baseband pool There are links between the pool control units, and the interconnection structure of the base station is relatively complicated and the cost is high
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[0022] In the technical solution of the present invention, the LVDS link between the baseband unit and the baseband pool control unit adopts a time division remote interface (TDRI, Time Division Remote Interface) protocol, and the TDRI protocol is first introduced below. see figure 2 , figure 2 It is a schematic diagram of the layered structure of the TDRI protocol in the prior art. The TDRI protocol is a communication protocol based on the remote communication between the baseband unit and the remote radio frequency unit through optical fiber connection. In the TDRI protocol layered structure, the in-phase and quadrature (IQ, in-phase and quadrature) data channels of the user plane can be used to transmit user data; the control and management plane includes Ethernet channels, manufacturer-specific channels and high-level data links The control (HDLC, High Level Data Link Control) channel can be used to transmit control and management information.
[0023] In the embodime...
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The invention provides a base station system and a data transmission method. The base station system comprises a main control unit, a baseband unit and a baseband pool controlling unit, wherein the main control unit is used for transmitting service data to the baseband pool controlling unit through an ethernet link and receiving the service data forwarded by the baseband pool controlling unit; the baseband unit is used for transmitting the service data to the baseband pool controlling unit through an ethernet channel for a time-division zoomed-out (TDRI) protocol; and the baseband pool controlling unit is used for receiving the service data transmitted by the main control unit and forwarding the service data to the baseband unit through the ethernet channel for the TDRI protocol and is also used for receiving the service data transmitted by the baseband unit and forwarding the service data to the main control unit through the ethernet link. The invention can reduce the complexity and the cost of the base station.
Description
technical field [0001] The invention relates to the field of mobile communication, in particular to a base station system and a data transmission method. Background technique [0002] In existing TD-SCDMA Time Division Duplex Long Term Evolution (TDD LTE, Time Division Duplex Long Term Evolution) and other technologies, the base station includes a master control unit, a baseband unit, and a baseband pool control unit. Take TD-SCDMA base station as an example, see figure 1 , figure 1 It is a schematic structural diagram of a TD-SCDMA base station in the prior art. Among them, there may be two main control units for active / standby switching; if the active / standby switching function is not required, only one main control unit may be included. There are N baseband units, numbered 0, 1, ..., N-1. There is one baseband pool control unit. [0003] Each main control unit and each baseband unit are linked by Ethernet E(i, j), mainly for exchanging business data, wherein, i=0,1 i...
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IPC IPC(8): H04W88/08
Inventor 马卫国
Owner DATANG MOBILE COMM EQUIP CO LTD